Ok, this may help other people in the future. You can actually get the millisecond epoch time of a tweet from just the ID. So even if the tweet was deleted, it is still recoverable. Roseanne's deleted tweet id was 1001353729872773121. Using python ...
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... we can right right bitshift the Twitter id by 22 and add the beginning of Twitter's snowflake implementation to it to get the exact epoch time of the tweet.
((1001353729872773121 >> 22) + 1288834974657) / 1000.0
Returns: 1527576308.111
Fucking magic.