That is because in both cities, he is with his family.
When observing the case of ‘Aa.ishah (radhi-yAllaahu ‘anhaa), it’s difficult [to comprehend] that she delayed making-up the [missed] fasts [of the previous Ramadhaan] until Sha’baan. So the question arises, did she not fast the voluntary fasts which were encouraged?
Welcome to Winter – during which blessings descend [from Allaah]; wherein the nights are long [and therefore conducive] to stand[ing] in prayer, and the days are short [and conducive] to fast[ing].
A man fasts from that which is halaal and good, and breaks his fast with that which is haraam and bad; the flesh of his brother.
The scholars of hadeeth said “there is no hadeeth related to the [virtue of the night of] 15th of Sha’baan which is authentic.