When referring to week days we use the preposition “on”. e.g. on Monday, on Sunday.
How about “the coming Sunday” and “next Sunday” ?
Should we use “on the coming Sunday” or “in the coming Sunday” ?
Also, “on next Sunday” or “ in next Sunday” ?
‘Next/last’ does not take the preposition, but it is optional with ‘coming’ and with no modifier…and of course there are exceptions in some contextual structures.