Hi, thanks for using Hebcal and thanks for the feedback!

Hebcal.com now offers a REST API for calculating zmanim (halachic times) for a given location

https://www.hebcal.com/home/1663/zmanim-halachic-times-api

chatzotNight – Midnight – Chatzot Sunset plus 6 halachic hours alotHaShachar – Dawn – Alot haShachar Sun is 16.1° below the horizon in the morning misheyakir – Earliest talis & tefillin – Misheyakir Sun is 11.5° below the horizon in the morning misheyakirMachmir – Earliest talis & tefillin – Misheyakir Machmir Sun is 10.2° below the horizon in the morning dawn – Civil dawn Sun is 6° below the horizon in the morning sunrise – Sunrise Upper edge of the Sun appears over the eastern horizon in the morning (0.833° above horizon) sofZmanShma – Latest Shema (Gra) Sunrise plus 3 halachic hours, according to the Gra sofZmanTfilla – Latest Shacharit (Gra) Sunrise plus 4.5 halachic hours, according to the Gra chatzot – Midday – Chatzot Sunrise plus 6 halachic hours minchaGedola – Earliest Mincha – Mincha Gedola Sunrise plus 6.5 halachic hours minchaKetana – Preferable earliest time to recite Minchah – Mincha Ketana Sunrise plus 9.5 halachic hours plagHaMincha – Plag haMincha Sunrise plus 10.75 halachic hours sunset – Sunset When the upper edge of the Sun disappears below the horizon (0.833° below horizon) dusk – Civil dusk Sun is 6° below the horizon in the evening tzeit7083deg – Nightfall (3 medium stars) – Tzeit 7.083° When 3 medium stars are observable in the night sky with the naked eye (sun 7.083° below the horizon) tzeit85deg – Nightfall (3 small stars) – Tzeit 8.5° When 3 small stars are observable in the night sky with the naked eye (sun 8.5° below the horizon) tzeit42min – Nightfall (3 medium stars) – Tzeit 42 minutes When 3 medium stars are observable in the night sky with the naked eye (fixed 42 minutes after sunset) tzeit50min – Nightfall (3 small stars) – Tzeit 50 minutes When 3 small stars are observable in the night sky with the naked eye (fixed 50 minutes after sunset) tzeit72min – Nightfall (Rabbeinu Tam) – Tzeit 72 minutes When 3 small stars are observable in the night sky with the naked eye (fixed 72 minutes after sunset)