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Shabbat Shalom!
Looks like a mismatch between http and https. Your synagogue website is https, but you were trying to load from hebcal over http. The security-level mismatch prevents the browser from fetching content from hebcal.com.

If your website uses https, you'll need to reference hebcal URLs using the same protocol.

We've updated our script tags to use // instead of http://. See the updated HTML you should use at this page:

http://www.hebcal.com/home/40/displaying-todays-hebrew-date-on-your-website


Thanks for your suggestion. We're working on implementing the feature. Let us know if this looks good to you?

http://www.hebcal.com/hebcal/?v=1&cfg=json&s=on&year=2015&month=7
{
    "items": [{
        "title": "Parashat Balak",
        "category": "parashat",
        "hebrew": "פרשת בלק",
        "leyning": {
            "6": "Numbers 23:27 - 24:13",
            "2": "Numbers 22:13 - 22:20",
            "torah": "Numbers 22:2 - 25:9",
            "triennial": {
                "1": "Numbers 22:39 - 22:41",
                "4": "Numbers 23:7 - 23:12",
                "maftir": "Numbers 23:19 - 23:26",
                "3": "Numbers 23:4 - 23:6",
                "7": "Numbers 23:19 - 23:26",
                "5": "Numbers 23:13 - 23:15",
                "2": "Numbers 23:1 - 23:3",
                "6": "Numbers 23:16 - 23:18"
            },
            "5": "Numbers 23:13 - 23:26",
            "7": "Numbers 24:14 - 25:9",
            "haftarah": "Micah 5:6 - 6:8",
            "3": "Numbers 22:21 - 22:38",
            "maftir": "Numbers 25:7 - 25:9",
            "4": "Numbers 22:39 - 23:12",
            "1": "Numbers 22:2 - 22:12"
        },
        "date": "2015-07-04",
        "link": "http://www.hebcal.com/sedrot/balak"
    }, {
        "link": "http://www.hebcal.com/sedrot/pinchas",
        "date": "2015-07-11",
        "leyning": {
            "7": "Numbers 29:12 - 30:1",
            "triennial": {
                "7": "Numbers 28:11 - 28:15",
                "5": "Numbers 27:15 - 27:23",
                "6": "Numbers 28:1 - 28:10",
                "2": "Numbers 26:57 - 26:62",
                "maftir": "Numbers 28:11 - 28:15",
                "3": "Numbers 26:63 - 27:5",
                "1": "Numbers 26:52 - 26:56",
                "4": "Numbers 27:6 - 27:14"
            },
            "5": "Numbers 28:1 - 28:15",
            "torah": "Numbers 25:10 - 30:1",
            "6": "Numbers 28:16 - 29:11",
            "2": "Numbers 26:5 - 26:51",
            "1": "Numbers 25:10 - 26:4",
            "4": "Numbers 27:6 - 27:23",
            "maftir": "Numbers 29:35 - 30:1",
            "3": "Numbers 26:52 - 27:5",
            "haftarah": "Jeremiah 1:1 - 2:3 | Pinchas occurring after 17 Tammuz"
        },
        "hebrew": "פרשת פינחס",
        "category": "parashat",
        "title": "Parashat Pinchas"
    }, {
        "link": "http://www.hebcal.com/sedrot/matotmasei",
        "date": "2015-07-18",
        "hebrew": "פרשת מטות־מסעי",
        "leyning": {
            "7": "Numbers 35:9 - 36:13",
            "triennial": {
                "1": "Numbers 32:1 - 32:4",
                "4": "Numbers 32:28 - 32:42",
                "maftir": "Numbers 33:47 - 33:49",
                "3": "Numbers 32:20 - 32:27",
                "5": "Numbers 33:1 - 33:10",
                "7": "Numbers 33:37 - 33:49",
                "6": "Numbers 33:11 - 33:36",
                "2": "Numbers 32:5 - 32:19"
            },
            "5": "Numbers 33:50 - 34:15",
            "torah": "Numbers 30:2 - 36:13",
            "6": "Numbers 34:16 - 35:8",
            "2": "Numbers 31:13 - 31:54",
            "1": "Numbers 30:2 - 31:12",
            "4": "Numbers 32:20 - 33:49",
            "maftir": "Numbers 36:11 - 36:13",
            "haftarah": "Jeremiah 2:4 - 28; 3:4",
            "3": "Numbers 32:1 - 32:19"
        },
        "category": "parashat",
        "title": "Parashat Matot-Masei"
    }, {
        "title": "Parashat Devarim",
        "category": "parashat",
        "link": "http://www.hebcal.com/sedrot/devarim",
        "date": "2015-07-25",
        "hebrew": "פרשת דברים",
        "leyning": {
            "2": "Deuteronomy 1:11 - 1:21",
            "6": "Deuteronomy 2:31 - 3:14",
            "torah": "Deuteronomy 1:1 - 3:22",
            "7": "Deuteronomy 3:15 - 3:22",
            "triennial": {
                "1": "Deuteronomy 2:2 - 2:5",
                "4": "Deuteronomy 2:17 - 2:19",
                "maftir": "Deuteronomy 2:28 - 2:30",
                "3": "Deuteronomy 2:13 - 2:16",
                "7": "Deuteronomy 2:26 - 2:30",
                "5": "Deuteronomy 2:20 - 2:22",
                "2": "Deuteronomy 2:6 - 2:12",
                "6": "Deuteronomy 2:23 - 2:25"
            },
            "5": "Deuteronomy 2:2 - 2:30",
            "4": "Deuteronomy 1:39 - 2:1",
            "1": "Deuteronomy 1:1 - 1:10",
            "3": "Deuteronomy 1:22 - 1:38",
            "haftarah": "Isaiah 1:1 - 1:27",
            "maftir": "Deuteronomy 3:20 - 3:22"
        }
    }],
    "location": {
        "geo": "none"
    },
    "title": "Hebcal July 2015",
    "link": "http://www.hebcal.com/hebcal/?v=1;s=on;year=2015;month=7;c=off",
    "date": "2015-07-12T20:29:57-00:00"
}
Thanks for using Hebcal! Unforutnately, we don't support the full range of halachic times.

Try using http://www.kashrut.com/zemanim/ or http://www.myzmanim.com/
Looks like you did this with unbalanced HTML tags:
<script type="text/javascript" charset="utf-8"
 src="http://www.hebcal.com/etc/hdate-he.js">
 src="http://www.hebcal.com/etc/hdate-en.js">
</script>

When in fact you want two pairs of script tags like this:
<script type="text/javascript" charset="utf-8"
 src="http://www.hebcal.com/etc/hdate-he.js">
</script>

<script type="text/javascript" charset="utf-8"
 src="http://www.hebcal.com/etc/hdate-en.js">
</script>
Hi, thanks for using Hebcal!

If you leave the candle-lighting times location box empty, you will get a calendar without any candle-lighting times: