For minor fast days, Hebcal currently lists the Torah reading which is read both in the morning and the afternoon, but the haftarah (read only in the afternoon) is not included. On Tisha b’Av the afternoon Torah reading is different from the morning reading and there is a haftarah reading (also different from the morning’s haftarah), but Hebcal only shows the morning Torah reading and morning haftarah. (For Yom Kippur mincha, Hebcal does give the Torah reading and haftarah, which are both different from what is read on Yom Kippur morning.) I think it would be better to include a mincha section for each minor fast day, indicating that the Torah reading is the same as in the morning, but there is also a haftarah. For Tisha b’Av the different afternoon Torah reading and haftarah should be included, just like on Yom Kippur.
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