昧
=
日
+
未
:
Mahatma Gandhi (m) wants to give the kids of an orphanage the sun (日) as a Christmas present, but he wants to keep it secret, so he asks Ai Weiwei (未) to conceal (昧) the sun for him in the Eiffel Tower's bathroom (ei4). Naturally, with the sun hidden, it gets quite dark (昧).
旦
=
一
+
日
:
Mnemonic symbol: A big mug, since many people start the day with a mug of coffee.
Don Quixote (d) meets the sun (日) early in the morning (旦) in the anthill's bathroom (an4). Don Quixote is full of energy and can't wait to start into a new adventure, but since the sun is a morning grouch who only just started drinking her mug of coffee (mnemonic symbol for 旦) she cannot stand it and beats him over the head with a flute (一) to calm him a bit down.